Bicycle frame



FIG. 1 is a left side elevational view of a bicycle frame showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a left side elevational view similar to FIG. 1 but showing added components of a bicycle which form no part of the present invention shown in dotted lines for purposes of clarification.

The broken line showings of pegs and supports in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a bicycle frame, as shown and described. 